Coffee-pot



(No ModeL L. W. WALKER.

COFFEE POT.

No. 277,813. Patented May 15,1883.

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ATTORNEYS.

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UNITED STATES PATENT OFFICE.

LEWIS W. WALKER, OF MINNEAPOLIS, MINNESOTA.

COFFEE-POT.

SPECIFICATION forming part of Letters Patent No. 277,813, dated May 15, 1883.

Application filed March 10, 1881. (No model.)

To all whom it may concern Be it known that l, LEWIS WV. WVALKER, of Minneapolis, in the county of Hennepin and State of Minnesota, have made certain new and useful Improvements in Oofi'ee-Pots, of which the following is a full, clear, and exact desciiption, reference being made to the accompanying drawings and letters of reference marked thereon, in which- Figure 1 shows a vertical section of my improved cofi'ee-pot with the handle and cover: removed, and Fig. 2 is an enlarged detail sectional view.

My invention relates to improvements in that class of cotiee-pots in which an inner vessel for the colfee is arranged within and concentric with an outer vessel, with a waterspace between the vessels; and the object of my invention is to condense the steam formed in the water-jacket between the vessels in the process of making the coffee, and allow the water of condensation to flow back into the waterjacket, whereby I reduce the quantity of water necessary to be used in the waterreservoir, prevent its escape in the form of steam, and am enabled to use a smaller and lighter coffee-pot.

In the accompanying drawings, A represents the inner vessel for the coffee, and B the outer vessel, the-former being arranged within and concentric with the outer vessel, B, of larger diameter, and the two vessels are soldered together along their upper edges, with a Water-space, N, between them. An opening is made iuthe outer vessel for the spout E, communicating with the inner vessel, A, and secured thereto and also to the outer vessel at G.

J represents a feed-water pipe, open at its upper end, secured to the outerwessel, B, and communicating at its lower end with the water space or jacket N, whereby the latter is filled to the requisite height.

M represents a concave condensing-disk secured to the inside of the feed-water pipe J,

near its upper end, and lying directly opposite the mouth of the steam-pipe H in the pipe J.

The inner end of the steam-pipe H communicates by the passagea with the watenspace N.

The coffee-pot is provided with the usual cover and handle. (Not shown in the drawings.)

In practice water is poured into the mouth 0 0t' the feed-water pipe J until the waterreservoir is filled to the height .of the gage point P, which can be seen by looking in at the top of the feed-pipe J. The coffee-pot is then placed on the fire, and when steam is produced in the water-space N it passes up the passage a to the steanrpipe H, thence through the latter, and is discharged against the concave disk M, which condenses the steam, thewater of condensation flowing back into the water-space N. By thus continually condensing the steam arising from the waterspace and allowing the water of condensation to flow back into the \vatenspace, less water is required in the latter than it it were allowed to escape as steam, and the hot water in the reservoir will keep thecotlee hot while being served, and there will be no danger of all the water in the reservoir being evaporated by boiling.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the inner and outer vessels, A B, having a water-space between them, of the feed-water pipe J, steam-pipe H, and concave condensing-disk-lli, substantially as described, and for the purpose set forth.

LEWIS WILLARD VALKER.

Witnesses:

J OHN H. HORTON, JAMES A. SMITH. 

